arch/arm/mach-imx/eukrea_mbimxsd51-baseboard.c

   1 /*
   2  * Copyright (C) 2010 Eric Benard - eric@eukrea.com
   3  *
   4  * Based on pcm970-baseboard.c which is :
   5  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  19  * MA 02110-1301, USA.
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/init.h>
  24
  25 #include <linux/gpio.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/leds.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/input.h>
  30 #include <linux/i2c.h>
  31 #include <video/platform_lcd.h>
  32 #include <linux/backlight.h>
  33
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/time.h>
  37 #include <asm/mach/map.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/common.h>
  41 #include <mach/iomux-mx51.h>
  42
  43 #include "devices-imx51.h"
  44
  45 static iomux_v3_cfg_t eukrea_mbimxsd51_pads[] = {
  46         /* LED */
  47         MX51_PAD_NANDF_D10__GPIO3_30,
  48         /* SWITCH */
  49         NEW_PAD_CTRL(MX51_PAD_NANDF_D9__GPIO3_31, PAD_CTL_PUS_22K_UP |
  50                         PAD_CTL_PKE | PAD_CTL_SRE_FAST |
  51                         PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
  52         /* UART2 */
  53         MX51_PAD_UART2_RXD__UART2_RXD,
  54         MX51_PAD_UART2_TXD__UART2_TXD,
  55         /* UART 3 */
  56         MX51_PAD_UART3_RXD__UART3_RXD,
  57         MX51_PAD_UART3_TXD__UART3_TXD,
  58         MX51_PAD_KEY_COL4__UART3_RTS,
  59         MX51_PAD_KEY_COL5__UART3_CTS,
  60         /* SD */
  61         MX51_PAD_SD1_CMD__SD1_CMD,
  62         MX51_PAD_SD1_CLK__SD1_CLK,
  63         MX51_PAD_SD1_DATA0__SD1_DATA0,
  64         MX51_PAD_SD1_DATA1__SD1_DATA1,
  65         MX51_PAD_SD1_DATA2__SD1_DATA2,
  66         MX51_PAD_SD1_DATA3__SD1_DATA3,
  67         /* SD1 CD */
  68         NEW_PAD_CTRL(MX51_PAD_GPIO1_0__SD1_CD, PAD_CTL_PUS_22K_UP |
  69                         PAD_CTL_PKE | PAD_CTL_SRE_FAST |
  70                         PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
  71         /* SSI */
  72         MX51_PAD_AUD3_BB_TXD__AUD3_TXD,
  73         MX51_PAD_AUD3_BB_RXD__AUD3_RXD,
  74         MX51_PAD_AUD3_BB_CK__AUD3_TXC,
  75         MX51_PAD_AUD3_BB_FS__AUD3_TXFS,
  76         /* LCD Backlight */
  77         MX51_PAD_DI1_D1_CS__GPIO3_4,
  78         /* LCD RST */
  79         MX51_PAD_CSI1_D9__GPIO3_13,
  80 };
  81
  82 #define GPIO_LED1       IMX_GPIO_NR(3, 30)
  83 #define GPIO_SWITCH1    IMX_GPIO_NR(3, 31)
  84 #define GPIO_LCDRST     IMX_GPIO_NR(3, 13)
  85 #define GPIO_LCDBL      IMX_GPIO_NR(3, 4)
  86
  87 static void eukrea_mbimxsd51_lcd_power_set(struct plat_lcd_data *pd,
  88                                    unsigned int power)
  89 {
  90         if (power)
  91                 gpio_direction_output(GPIO_LCDRST, 1);
  92         else
  93                 gpio_direction_output(GPIO_LCDRST, 0);
  94 }
  95
  96 static struct plat_lcd_data eukrea_mbimxsd51_lcd_power_data = {
  97         .set_power              = eukrea_mbimxsd51_lcd_power_set,
  98 };
  99
 100 static struct platform_device eukrea_mbimxsd51_lcd_powerdev = {
 101         .name                   = "platform-lcd",
 102         .dev.platform_data      = &eukrea_mbimxsd51_lcd_power_data,
 103 };
 104
 105 static void eukrea_mbimxsd51_bl_set_intensity(int intensity)
 106 {
 107         if (intensity)
 108                 gpio_direction_output(GPIO_LCDBL, 1);
 109         else
 110                 gpio_direction_output(GPIO_LCDBL, 0);
 111 }
 112
 113 static struct generic_bl_info eukrea_mbimxsd51_bl_info = {
 114         .name                   = "eukrea_mbimxsd51-bl",
 115         .max_intensity          = 0xff,
 116         .default_intensity      = 0xff,
 117         .set_bl_intensity       = eukrea_mbimxsd51_bl_set_intensity,
 118 };
 119
 120 static struct platform_device eukrea_mbimxsd51_bl_dev = {
 121         .name                   = "generic-bl",
 122         .id                     = 1,
 123         .dev = {
 124                 .platform_data  = &eukrea_mbimxsd51_bl_info,
 125         },
 126 };
 127
 128 static const struct gpio_led eukrea_mbimxsd51_leds[] __initconst = {
 129         {
 130                 .name                   = "led1",
 131                 .default_trigger        = "heartbeat",
 132                 .active_low             = 1,
 133                 .gpio                   = GPIO_LED1,
 134         },
 135 };
 136
 137 static const struct gpio_led_platform_data
 138                 eukrea_mbimxsd51_led_info __initconst = {
 139         .leds           = eukrea_mbimxsd51_leds,
 140         .num_leds       = ARRAY_SIZE(eukrea_mbimxsd51_leds),
 141 };
 142
 143 static struct gpio_keys_button eukrea_mbimxsd51_gpio_buttons[] = {
 144         {
 145                 .gpio           = GPIO_SWITCH1,
 146                 .code           = BTN_0,
 147                 .desc           = "BP1",
 148                 .active_low     = 1,
 149                 .wakeup         = 1,
 150         },
 151 };
 152
 153 static const struct gpio_keys_platform_data
 154                 eukrea_mbimxsd51_button_data __initconst = {
 155         .buttons        = eukrea_mbimxsd51_gpio_buttons,
 156         .nbuttons       = ARRAY_SIZE(eukrea_mbimxsd51_gpio_buttons),
 157 };
 158
 159 static const struct imxuart_platform_data uart_pdata __initconst = {
 160         .flags = IMXUART_HAVE_RTSCTS,
 161 };
 162
 163 static struct i2c_board_info eukrea_mbimxsd51_i2c_devices[] = {
 164         {
 165                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 166         },
 167 };
 168
 169 static const
 170 struct imx_ssi_platform_data eukrea_mbimxsd51_ssi_pdata __initconst = {
 171         .flags = IMX_SSI_SYN | IMX_SSI_NET | IMX_SSI_USE_I2S_SLAVE,
 172 };
 173
 174 static int screen_type;
 175
 176 static int __init eukrea_mbimxsd51_screen_type(char *options)
 177 {
 178         if (!strcmp(options, "dvi"))
 179                 screen_type = 1;
 180         else if (!strcmp(options, "tft"))
 181                 screen_type = 0;
 182
 183         return 0;
 184 }
 185 __setup("screen_type=", eukrea_mbimxsd51_screen_type);
 186
 187 /*
 188  * system init for baseboard usage. Will be called by cpuimx51sd init.
 189  *
 190  * Add platform devices present on this baseboard and init
 191  * them from CPU side as far as required to use them later on
 192  */
 193 void __init eukrea_mbimxsd51_baseboard_init(void)
 194 {
 195         if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd51_pads,
 196                         ARRAY_SIZE(eukrea_mbimxsd51_pads)))
 197                 printk(KERN_ERR "error setting mbimxsd pads !\n");
 198
 199         imx51_add_imx_uart(1, NULL);
 200         imx51_add_imx_uart(2, &uart_pdata);
 201
 202         imx51_add_sdhci_esdhc_imx(0, NULL);
 203
 204         imx51_add_imx_ssi(0, &eukrea_mbimxsd51_ssi_pdata);
 205
 206         gpio_request(GPIO_LED1, "LED1");
 207         gpio_direction_output(GPIO_LED1, 1);
 208         gpio_free(GPIO_LED1);
 209
 210         gpio_request(GPIO_SWITCH1, "SWITCH1");
 211         gpio_direction_input(GPIO_SWITCH1);
 212         gpio_free(GPIO_SWITCH1);
 213
 214         gpio_request(GPIO_LCDRST, "LCDRST");
 215         gpio_direction_output(GPIO_LCDRST, 0);
 216         gpio_request(GPIO_LCDBL, "LCDBL");
 217         gpio_direction_output(GPIO_LCDBL, 0);
 218         if (!screen_type) {
 219                 platform_device_register(&eukrea_mbimxsd51_bl_dev);
 220                 platform_device_register(&eukrea_mbimxsd51_lcd_powerdev);
 221         } else {
 222                 gpio_free(GPIO_LCDRST);
 223                 gpio_free(GPIO_LCDBL);
 224         }
 225
 226         i2c_register_board_info(0, eukrea_mbimxsd51_i2c_devices,
 227                                 ARRAY_SIZE(eukrea_mbimxsd51_i2c_devices));
 228
 229         gpio_led_register_device(-1, &eukrea_mbimxsd51_led_info);
 230         imx_add_gpio_keys(&eukrea_mbimxsd51_button_data);
 231 }